Storage unit



FIG. 1 is a perspective view of a storage unit;

FIG. 2 is a front elevation view of the storage unit;

FIG. 3 is a rear elevation view of the storage unit;

FIG. 4 is a left side elevation view of the storage unit

FIG. 5 is a right side elevation view of the storage unit;

FIG. 6 is a top plan view of the storage unit; and,

FIG. 7 is a bottom plan view of the storage unit.

The broken lines depict portions of the article that form no part of the claimed design. 

CLAIM The ornamental design for a storage unit, as shown and described. 